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18-Env-B7 Environmental Sampling and Analysis: May 2016

Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)

  1. Question 1 Sampling Design, Environmental Data, and Statistical True/False
  2. Question 2 Paired T-Test for Two CO₂ Measurement Methods
  3. Question 3 Field-to-Laboratory Sample Protocol
  4. Question 4 Dotplot, Boxplot and Skewness of Nitrate Data
  5. Question 5 Terminology in Environmental Sampling and Analysis
  6. Question 6 An Environmental Monitoring Program

Start with Question 1 →

National Exams — May 2016 — 04-Env-B7 / Environmental Sampling and Analysis. 3 hours duration; closed book (approved non-programmable Sharp or Casio calculator only); t-distribution table supplied. Part A (Questions 1–3) is compulsory; Part B (Questions 4–6, see note below) asks for any two of three — all six are solved below for completeness. Each question is worth 20 marks.

Check: the printed Part B instruction ("answer any 2 questions") is followed by three distinct 20-mark tasks – Question 4 (nitrate dotplot/boxplot), Question 5 (eight-term definition list), and a further open-ended "environmental monitoring program" prompt that the exam's own marking scheme lists as a separate item 6 (20 marks, descriptive) even though the source page prints it directly under Question 5's heading with no "6." label of its own. This is treated here as Question 6, matching the marking scheme's six-item structure; all three Part B questions are solved in full per the standing "answer everything" convention.

Reference texts. Walpole, Myers, Myers & Ye, Probability & Statistics for Engineers and Scientists (statistical hypothesis testing, exploratory data analysis); Davis & Cornwell, Introduction to Environmental Engineering (6th ed.) (sampling design, QA/QC, environmental monitoring programs); U.S. EPA Guidance for Choosing a Sampling Design for Environmental Data Collection (QA/G-5S); Canadian Council of Ministers of the Environment (CCME) monitoring and reporting guidance.